| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Clandon Exhibitions and Conferences Limited | 00899889 | 03/12/1991 | Dissolved |
| Outsize Godden Enterprises Ltd | 02525614 | 01/01/1992 | Dissolved |
| Powertech Exhibitions Limited | 00643117 | 03/12/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ASEE EXHIBITIONS LIMITED | 00524559 | 03/12/1991 | 26/07/2000 | Dissolved |
| ELECTREX LIMITED | 01373684 | 03/12/1991 | 15/07/2000 | Dissolved |
| INCORPORATED ROCHESTER DIOCESAN BOARD OF EDUCATION | 00046014 | 01/06/1991 | 01/01/2006 | Gold |
| Institution of Incorporated Executive Engineers | 00439164 | 17/06/1995 | 25/10/1999 | Dissolved |
| ROCHESTER DIOCESAN SOCIETY AND BOARD OF FINANCE(THE) | 00140656 | 01/01/1999 | 31/12/2000 | Gold |
| THE DIOCESAN SCHOOLS AGENCY LIMITED | 02892269 | 01/07/2004 | 21/08/2014 | Bronze |
| TRINITAS ACADEMY TRUST | 07554121 | 07/03/2011 | 27/03/2020 | Silver |